Grid Size | Lateral Finite Difference | Central Finite Difference | Mimetic Method |
20 | 0.1985 | 0.0153 | 0.0037 |
30 | 0.1350 | 0.0069 | 0.0016 |
40 | 0.1022 | 0.0039 | 0.0009 |
50 | 0.0823 | 0.0025 | 0.0006 |
60 | 0.0688 | 0.0017 | 0.0004 |
70 | 0.0592 | 0.0013 | 0.0003 |
Convergence rate in space | 0.9301 | 1.9486 | 2.0300 |
Convergence rate in time | 0.4650 | 0.9743 | 1.0150 |